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His fundus showed no abnormalities except for somewhat yellowish reflex in the fovea of both eyes. There was no response in the rod ERG, either. From the findings of the typical ERG, the patient was diagnosed with complete congenital stationary night blindness. This case underscores the importance of ERG in order to diagnose the cause of a color vision anomaly.

Assessing color vision loss among solvent-exposed workers. Acquired color vision loss has been associated with exposure to organic solvents in the workplace. However, not all tests of chromatic discrimination loss are designed to detect acquired, as opposed to congenital, loss. The Lanthony D desaturated panel Dd , a simple 15 cap color arrangement test, designed to identify mild acquired dyschromatopsia, can be administered rapidly in the field, under standard conditions.

The objective of the present study was to evaluate the Dd among 23 solvent-exposed workers of a paint manufacturing plant, by comparing the results obtained with the Dd to those obtained with the Farnsworth-Munsell Hue FM , a highly sensitive measure of color vision loss.

All dyschromatopic workers presented blue-yellow loss; the FM detected eight complex patterns, while the Dd identified 5. Comparison of Dd and FM scores were highly correlated corr. Multiple regression analyses showed both scores to be significantly related to age and exposure level. The findings of this study indicate that the Dd is an adequate instrument for field study batteries.

However, the FM should be used for more detailed assessment. The evolution of opsins and color vision : connecting genotype to a complex phenotype.

Full Text Available Dissecting the genetic basis of adaptive traits is key to our understanding of evolutionary processes. A major and essential step in the study of evolutionary genetics is drawing link between genotype and phenotype, which depends on the difficult process of defining the phenotype at different levels, from functional to organismal.

Visual pigments are a key component of the visual system and their evolution could also provide important clues on the evolution of visual sensory system in response to sexual and natural selection.

As a system in which genotype can be linked to phenotype, I will use visual pigments and color vision , particularly in birds, as a case of a complex phenotype. I aim to emphasize the difficulties in drawing the genotype-phenotype relationship for complex phenotypes and to highlight the challenges of doing so for color vision.

The use of vision -based receiver models to quantify animal colors and patterns is increasingly important in many fields of evolutionary research, spanning studies of mate choice, predation, camouflage and sensory ecology. Given these models impact on evolution and ecology, it is important to provide other researchers with the opportunity to better understand animal vision and the corresponding advantages and limitations of these models.

Accessible maps for the color vision deficient observers: past and present knowledge and future possibilities. Color is part of the visual variables in map, serving an aesthetic part and as a guide of attention. Impaired color vision affects the ability to distinguish colors , which makes the task of decoding the map colors difficult. Map reading is reported as a challenging task for these observers, especially when the size of stimuli is small.

The aim of this study is to review existing methods for map design for color vision deficient users. A systematic review of research literature and case studies of map design for CVD observers has been conducted in order to give an overview of current knowledge and future research challenges. In addition, relevant research on simulations of CVD and color image enhancement for these observers from other fields of industry is included.

The study identified two main approaches: pre-processing by using accessible colors and post-processing by using enhancement methods. Some of the methods may be applied for maps, but requires tailoring of test images according to map types. Full Text Available Introduction: Color vision is one of the important attribute of visual perception. Method: A cross-sectional study was conducted among students of four schools of Kathmandu. Assessment included visual acuity measurement, slit lamp examination of anterior segment and fundus examination with direct ophthalmoscopy.

Each student was assessed with the Ishihara pseudoisochromatic test and the Farnsworth D test. The Chi-square test was performed to analyse color vision defect detected by the Ishihara test and the Farnsworth D test. Results: A total of students comprising of males The prevalence of color vision defect as indicated by the Ishihara was 2. Conclusion: For school color vision screening, the Ishihara color test and the Farnsworth D test have equal capacity to detect congenital color vision defect and they complement each other.

Keywords: color vision ; children; defect; Farnsworth D; Ishihara. Patients with the complete form of congenital stationary night blindness CSNB often have reduced visual acuity, myopia, impaired night vision , and sometimes nystagmus and strabismus, however, they seldom complain of color vision abnormality.

The objective of this study was to evaluate the performance of color camera machine vision for lumber processing in a furniture rough mill. The study used red oak boards to compare the performance of automated gang-rip-first rough mill yield based on a prototype color camera lumber inspection system developed at Virginia Tech with both estimated optimum rough mill Color vision predicts processing modes of goal activation during action cascading.

One of the most important functions of cognitive control is action cascading: the ability to cope with multiple response options when confronted with various task goals. In this task it is possible to calculate an individual slope value for each participant that estimates the degree of overlap in task goal activation. When the stopping process of a previous task goal has not finished at the time the change process toward a new task goal is initiated parallel processing , the slope value becomes steeper.

In case of less overlap more serial processing , the slope value becomes flatter. As expected, participants showing better color vision were more prone to activate goals in a parallel manner as indicated by a steeper slope. Our findings suggest that color vision might represent a predictor of D2 efficiency and the predisposed processing mode of goal activation during action cascading.

Color vision loss in patients treated with chloroquine. Full Text Available Patients that make use of chloroquine or hydroxychloroquine, drugs which are frequently administered for treatment of rheumatoid arthritis, lupus erithromatosus or malaria, may suffer alterations in color vision and in contrast sensitivity.

Tests were performed monocularly with corrected eye refractive state. Color discrimination was evaluated using the Cambridge Colour Test CCT: the color discrimination threshold was measured first in the protan, deutan and tritan axes and, in succession, three MacAdam’s ellipses were determined.

We also measured the contrast sensitivity for black-and-white sine wave grating of twenty two patients. The results were compared with controls without ophthalmologic or neuro-ophthalmologic pathologies. Twenty four patients presented acquired dyschromatopsia.

There were cases of selective loss 11 patients and of diffuse loss 13 patients. Although losses were present in the FM there was no correlation between the FM error score and the ellipse area measured by the CCT.

Moreover, three patients that scored normal in the FM, failed to reach normal threshold in the CCT. The Lanthony test was less sensitive than the other two tests, since it failed to indicate loss in about.

All clinical color vision tests currently used in the medical examination of pilots were studied regarding validity for prediction of performance on practical tests of ability to discriminate the aviation signal colors , red, green, and white given un Computer vision system in real-time for color determination on flat surface food. Full Text Available Artificial vision systems also known as computer vision are potent quality inspection tools, which can be applied in pattern recognition for fruits and vegetables analysis.

The aim of this research was to design, implement and calibrate a new computer vision system CVS in real-time for the color measurement on flat surface food. For this purpose was designed and implemented a device capable of performing this task software and hardware, which consisted of two phases: a image acquisition and b image processing and analysis.

Both the algorithm and the graphical interface GUI were developed in Matlab. The aim of this research was to design, implement and calibrate a new computer vision system CVS in real – time f or the color measurement on flat surface food. Both th e algorithm and the graphical interface GUI were developed in Matlab. Aim: To assess the difficulties encountered by students with congenital color vision defects in daily living and school activities. Structured questionnaires were administered to all consenting students to The Disunity of Color.

What is color? What is color vision? Most philosophers answer by reference to humans: to human color qualia, or to the environmental properties or “quality spaces” perceived by humans. It is argued, with reference to empirical findings concerning comparative color vision and the evolution of color vision , that all such attempts are mistaken. An adequate definition of color vision must eschew reference to its outputs in the human cognition and refer only to inputs: color vision consists in Qualitative evaluations and comparisons of six night- vision colorization methods.

Current multispectral night vision NV colorization techniques can manipulate images to produce colorized images that closely resemble natural scenes. The colorized NV images can enhance human perception by improving observer object classification and reaction times especially for low light conditions. This paper focuses on the qualitative subjective evaluations and comparisons of six NV colorization methods.

Four categries of quality measurements are used for the qualitative evaluations, which are contrast, detail, colorfulness , and overall quality. The score of each measurement is rated from 1 to 3 scale to represent low, average, and high quality, respectively. Specifically, high contrast of rated score 3 means an adequate level of brightness and contrast. The high detail represents high clarity of detailed contents while maintaining low artifacts.

The high colorfulness preserves more natural colors i. Overall quality is determined from the NV image compared to the reference image. Nine sets of multispectral NV images were used in our experiments. A total of 67 subjects passed a screening test “Ishihara Color Blindness Test” and were asked to evaluate the 9-set colorized images. The experimental results showed the quality order of colorization methods from the best to the worst: CBCF colorization and for quantitative evaluation using an objective metric such as objective evaluation index.

Security From Detection Vehicles. Color vision can be assessed using the seven Ishihara Pseudo Isochromatic plates usually contained in the TVT. Personnel chosen as observers for aural detectability tests must also have hearing ability For medical students, it has the potential to create unique challenges in the classroom and clinical environments. Few studies have provided medical educators with comprehensive recommendations to assist students with CVD.

This article presents a focused…. Measurement of meat color using a computer vision system. The limits of the colorimeter and a technique of image analysis in evaluating the color of beef, pork, and chicken were investigated. The Minolta CR colorimeter and a computer vision system CVS were employed to measure colorimetric characteristics.

To evaluate the chromatic fidelity of the image of the sample displayed on the monitor, a similarity test was carried out using a trained panel. The panelists found the digital images of the samples visualized on the monitor very similar to the actual ones Pmeat sample and the sample image on the monitor in order to evaluate the similarity between them test A.

Moreover, the panelists were asked to evaluate the similarity between two colors , both generated by the software Adobe Photoshop CS3 one using the L, a and b values read by the colorimeter and the other obtained using the CVS test B ; which of the two colors was more similar to the sample visualized on the monitor was also assessed test C.

The panelists found the digital images very similar to the actual samples Pcolors the panelists found significant differences between them Pcolor of the sample on the monitor was more similar to the CVS generated color than to the colorimeter generated color. The differences between the values of the L, a, b, hue angle and chroma obtained with the CVS and the colorimeter were statistically significant Pcolor of meat.

Instead, the CVS method seemed to give valid measurements that reproduced a color very similar to the real one. Ripeness classification of oil palm fresh fruit bunches FFBs during harvesting is important to ensure that they are harvested during optimum stage for maximum oil production. This paper presents the application of color vision for automated ripeness classification of oil palm FFB. Then the color features were extracted from those images and used as the inputs for Artificial Ne Poppet valve tester.

Tester investigates fundamental factors affecting cyclic life and sealing performance of valve seats and poppets.

Tester provides for varying impact loading of poppet against seat and rate of cycling, and controls amount and type of relative motion between sealing faces of seat and poppet. Relative motion between seat and poppet can be varied in three modes. Tester -assisted built in test. It is noted that board makers invest considerable time and money writing extensive self-tests and that this investment can be multiplied by selecting ATE automatic test equipment that complements and extends the power of the self-test.

The tester can diagnose boards in situations where a fault prevents the self-test from running. The tester can be used during development of the self-test and to turn on prototypes before the self-test is complete. The author argues that emulative functional testers outperform other types of ATE on boards with BIST built-in self-test and lists features of emulative functional testers that are most important to users of BIST. Advances in understanding the molecular basis of the first steps in color vision.

Serving as one of our primary environmental inputs, vision is the most sophisticated sensory system in humans. Here, we present recent findings derived from energetics, genetics and physiology that provide a more advanced understanding of color perception in mammals. Energetics of cis—trans isomerization of cis-retinal accounts for color perception in the narrow region of the electromagnetic spectrum and how human eyes can absorb light in the near infrared IR range.

Structural homology models of visual pigments reveal complex interactions of the protein moieties with the light sensitive chromophore cis-retinal and that certain color blinding mutations impair secondary structural elements of these G protein-coupled receptors GPCRs.

Finally, we identify unsolved critical aspects of color tuning that require future investigation. High-speed potato grading and quality inspection based on a color vision system. A high-speed machine vision system for the quality inspection and grading of potatoes has been developed.

The vision system grades potatoes on size, shape and external defects such as greening, mechanical damages, rhizoctonia, silver scab, common scab, cracks and growth cracks. A 3-CCD line-scan camera inspects the potatoes in flight as they pass under the camera.

The use of mirrors to obtain a degree view of the potato and the lack of product holders guarantee a full view of the potato. The color segmentation procedure uses Linear Discriminant Analysis LDA in combination with a Mahalanobis distance classifier to classify the pixels. The procedure for the detection of misshapen potatoes uses a Fourier based shape classification technique. Features such as area, eccentricity and central moments are used to discriminate between similar colored defects.

Experiments with red and yellow skin- colored potatoes have shown that the system is robust and consistent in its classification. A measuring device, located at the front end of the ETRT incorporates a tactile sensor comprising an array of microsensors. By application of a predetermined deformation of 2 mm, increased pressure alters linearly the resistance of each microsensor, producing changes of voltage.

These signals were amplified, filtered, and digitized, and then processed by an electronic collector system, which presented them as a color -filled contour plot of the area of the testis coming into contact with the sensor.

Testis models of different rigidity served for initial evaluation of ETRT; their evacuated central spaces contained different, increasing glue masses. An independent method of rigidity measurement, using an electric weight scale and a micrometer, showed that the more the glue injected, the greater the force needed for a 2-mm deformation.

In a preliminary test, a single sensor connected to a multimeter showed similar force measurement for the same deformation in these phantoms. For each of the testis models compressed in the same manner, the ETRT system offered a map of pressures, represented by a color scale within the contour plot of the contact area with the sensor.

ETRT found certain differences in rigidity between models that had escaped detection by a blind observer. After experimental testing, it could be valuable in intraoperative evaluation of testes, so that the surgeon can decide about orchectomy or orcheopexy.

The effects upon range of accommodation and color vision of reduced atmospheric pressure, at partial and complete elimination of nitrogen, of hypoxia, and of exposure for varying periods of time to restricted visual environment, have been studied alone or in various combinations. Measurements were made on the electroretinogram, the electrooculogram, and the diameter of the retinal vessels as an indicator of blood flow to the retina at the time of total elimination of nitrogen.

An objective method was used to test range of accommodation. In the color vision test the flicker colors of a Benham’s top were matched with a colorimeter. We present a design for a low-cost, functional VLSI chip tester.

It tests chips that have up to pins. All pin drivers of the tester are bidirectional; each pin is programmed independently as an input or an output. The tester can test both static and dynamic chips. Rudimentary speed testing is provided. Chips are tested by executing C programs written by the user. A software library is provided for program development. The design is implemented using Xilinx Logic Cell Arrays.

New experimental diffractive-optical data on E. Land’s Retinex mechanism in human color vision : Part II. A better understanding of the color constancy mechanism in human color vision [7] can be reached through analyses of photometric data of all illuminants and patches Mondrians or other visible objects involved in visual experiments. In Part I [3] and in [4, 5 and 6] the integration in the human eye of the geometrical-optical imaging hardware and the diffractive-optical hardware has been described and illustrated Fig.

The hardware relevant to photopic human color vision can be described as a diffractive or interference-optical correlator transforming incident light into diffractive-optical RGB data and relating local RGB onto global RGB data in the near-field behind the ‘inverted’ human retina. Spring performance tester for miniature extension springs. A spring performance tester and method of testing a spring are disclosed that has improved accuracy and precision over prior art spring testers.

The tester can perform static and cyclic testing. The spring tester can provide validation for product acceptance as well as test for cyclic degradation of springs, such as the change in the spring rate and fatigue failure. Common tester platform concept. This report summarizes the results of a case study on the doctrine of a common tester platform, a concept of a standardized platform that can be applicable across the broad spectrum of testing requirements throughout the various stages of a weapons program, as well as across the various weapons programs.

The common tester concept strives to define an affordable, next-generation design that will meet testing requirements with the flexibility to grow and expand; supporting the initial development stages of a weapons program through to the final production and surveillance stages. This report discusses a concept investing key leveraging technologies and operational concepts combined with prototype tester -development experiences and practical lessons learned gleaned from past weapons programs.

Signatures of functional constraint at aye-aye opsin genes: the potential of adaptive color vision in a nocturnal primate. While color vision perception is thought to be adaptively correlated with foraging efficiency for diurnal mammals, those that forage exclusively at night may not need color vision nor have the capacity for it.

Indeed, although the basic condition for mammals is dichromacy, diverse nocturnal mammals have only monochromatic vision , resulting from functional loss of the short-wavelength sensitive opsin gene. However, many nocturnal primates maintain intact two opsin genes and thus have dichromatic capacity. The evolutionary significance of this surprising observation has not yet been elucidated. We used a molecular population genetics approach to test evolutionary hypotheses for the two intact opsin genes of the fully nocturnal aye-aye Daubentonia madagascariensis , a highly unusual and endangered Madagascar primate.

No evidence of gene degradation in either opsin gene was observed for any of 8 aye-aye individuals examined. The most likely explanation for these findings is that dichromacy is advantageous for aye-ayes despite their nocturnal activity pattern.

We speculate that dichromatic nocturnal primates may be able to perceive color while foraging under moonlight conditions, and suggest that behavioral and ecological comparisons among dichromatic and monochromatic nocturnal primates will help to elucidate the specific activities for which color vision perception is advantageous.

Basic design principles of colorimetric vision systems. Color measurement is an important part of overall production quality control in textile, coating, plastics, food, paper and other industries. The color measurement instruments such as colorimeters and spectrophotometers, used for production quality control have many limitations.

In many applications they cannot be used for a variety of reasons and have to be replaced with human operators. Machine vision has great potential for color measurement. The components for color machine vision systems, such as broadcast quality 3-CCD cameras, fast and inexpensive PCI frame grabbers, and sophisticated image processing software packages are available.

However the machine vision industry has only started to approach the color domain. The few color machine vision systems on the market, produced by the largest machine vision manufacturers have very limited capabilities.

A lack of understanding that a vision based color measurement system could fail if it ignores the basic principles of colorimetry is the main reason for the slow progress of color vision systems. The subject of this presentation far exceeds the limitations of a journal paper so only the most important aspects will be discussed. An overview of the major areas of applications for colorimetric vision system will be discussed.

Finally, the reasons why some customers are happy with their vision systems and some are not will be analyzed. Simulation of the color vision : decoding quantum-electric transduction. Full Text Available We propose an experimental simulation, using accessible and low cost materials, on the biophysical mechanism of the color vision in accordance with the Young-Helmholtz s Trichromatic Theory, approaching mainly the coding and decoding process of electric signs that arrive to the cerebral cortex.

The stimulus that unchains this process is given through transformation of the quantized energy of a light photon that takes place in the photocells of the retina of the human eye. The construction of a simple system of collection and analysis of data, using a multimeter, filters, LDR and LEDs allows us to establish connections between the visual system and the simulation model.

Although color vision deficiency CVD is fairly common, it is often not adequately considered when data is presented in color graphics. This study found that CVD tends to be mentioned neither in the author guidelines of psychology journals nor in the standard publication manuals of the field e. To illustrate the relevance of this problem, a panel of scholars with CVD was used to evaluate the color figures in three respected psychological science journals. Results suggested that a substantial proportion of those figures were needlessly confusing for viewers with CVD and could have been easily improved through simple adjustments.

Based on prior literature and on feedback from the panelists, recommendations are made for improving the accessibility of graphics in psychology reports. I studied two genetic diseases, retinitis pigmentosa RP and color vision anomaly, in Kamigoto, one of the off-shore islands in Nagasaki Prefecture. The Prevalance of RP patients in this island was estimated to be one in persons.

Among the RP patients observed, familial cases whose disorders are transmitted through successive generations comprised Although it seems that the inheritance mode of RP in these familial cases is autosomal dominant, an autosomal recessive fashion showing quasi-dominance cannot be ruled out, because inbreeding frequently occurs on this island.

There were at least two types of RP, one with late onset 40 years of age or later and the other with early onset, and patients with the latter RP tended to have a poor prognosis. Only a few RP patients had posterior subcapsular cataract, and none had pseudexfoliation in spite of advanced age.

Color vision anomalies were found in 3. The prevalence in boys was comparable to that in the general Japanese population, but the prevalence in girls was higher in Kamigoto than in other districts. A new technique for robot vision in autonomous underwater vehicles using the color shift in underwater imaging.

Jones June Thesis Advisor Epistatic adaptive evolution of human color vision. Full Text Available Establishing genotype-phenotype relationship is the key to understand the molecular mechanism of phenotypic adaptation.

This initial step may be untangled by analyzing appropriate ancestral molecules, but it is a daunting task to recapitulate the evolution of non-additive epistatic interactions of amino acids and function of a protein separately. To adapt to the ultraviolet UV-free retinal environment, the short wavelength-sensitive SWS1 visual pigment in human human S1 switched from detecting UV to absorbing blue light during the last 90 million years.

Mutagenesis experiments of the UV-sensitive pigment in the Boreoeutherian ancestor show that the blue-sensitivity was achieved by seven mutations. The experimental and quantum chemical analyses show that 4, of all 5, possible evolutionary trajectories are terminated prematurely by containing a dehydrated nonfunctional pigment. Phylogenetic analysis further suggests that human ancestors achieved the blue-sensitivity gradually and almost exclusively by epistasis.

The adaptive evolution of human S1 differs dramatically from orthologous pigments with a major mutational effect used in achieving blue-sensitivity in a fish and several mammalian species and in regaining UV vision in birds.

These observations imply that the mechanisms of epistatic interactions must be understood by studying various orthologues in different species that have adapted to various ecological and physiological environments. Research on characteristics measurement of infrared defect tester. Based on a testing method of spatial frequency response SFR , a setup for characteristics measurements of the infrared defect tester ,which can also be called electroluminescence tester EL tester , a machine examining defects of photovoltaic PV panel, was built.

The influences of focusing plane adjustments and infrared light box arrangements on resolution measurement of EL tester in full field of view were analyzed. For different types of EL testers , portable and fixed, testing methods and procedures were presented. Especially, a novel testing method for portable EL was claimed, which could do the work well without reference background. Based on method claimed and setup built, the resolutions of different types of EL testers were obtained and stable results were achieved.

This setup is portable designed to meet online measurements requirements of PV industry. Relative advantages of dichromatic and trichromatic color vision in camouflage breaking. There is huge diversity in visual systems and color discrimination abilities, thought to stem from an animal’s ecology and life history.

Many primate species maintain a polymorphism in color vision , whereby most individuals are dichromats but some females are trichromats, implying that selection sometimes favors dichromatic vision.

Detecting camouflaged prey is thought to be a task where dichromatic individuals could have an advantage. However, previous work either has not been able to disentangle camouflage detection from other ecological or social explanations, or did not use biologically relevant cryptic stimuli to test this hypothesis under controlled conditions.

Here, we used online “citizen science” games to test how quickly humans could detect cryptic birds incubating nightjars and eggs of nightjars, plovers and coursers under trichromatic and simulated dichromatic viewing conditions. Trichromats had an overall advantage, although there were significant differences in performance between viewing conditions. When searching for consistently shaped and patterned adult nightjars, simulated dichromats were more heavily influenced by the degree of pattern difference than were trichromats, and were poorer at detecting prey with inferior pattern and luminance camouflage.

When searching for clutches of eggs-which were more variable in appearance and shape than the adult nightjars-the simulated dichromats learnt to detect the clutches faster, but were less sensitive to subtle luminance differences. These results suggest there are substantial differences in the cues available under viewing conditions that simulate different receptor types, and that these interact with the scene in complex ways to affect camouflage breaking.

Theoretical research on color indirect effects. Color indirect effects CIE means the physiological and psychological effects of color resulting from color vision. In this paper, we study CIE from the viewpoints of the integrated western and Chinese traditional medicine and the time quantum theory established by C.

Liu et al. Our theory is in agreement with modern color vision theory, and moreover, it leads to the resolution of the conflict between the color code theory and the time code theory oncolor vision.

For the latitude phenomena on athlete stars number and the average lifespan, we also discuss the possibility of UV vision. The applications of our theory lead to our succeeding in explaining a number of physiological and psychological effects of color , in explaining the effects of age on color vision , and in explaining the Chinese chromophototherapy.

We also discuss its application to neuroimmunology. This research provides the foundation of the clinical applications of chromophototherapy. Cone photoreceptor structure in patients with x-linked cone dysfunction and red-green color vision deficiency. Mutations in the coding sequence of the L and M opsin genes are often associated with X-linked cone dysfunction such as Bornholm Eye Disease, BED , though the exact color vision phenotype associated with these disorders is variable. We recruited 17 males for imaging.

The thickness and integrity of the photoreceptor layers were evaluated using spectral-domain optical coherence tomography. Cone density was measured using high-resolution images of the cone Development of a second generation rolling contact fatigue tester. Contact fatigue failure has been in research since the early twentieth century. The need for a second generation sliding-rolling contact fatigue tester was proposed by Gregory Dvorak and Dr.

Marcellin Zahui. The first generation RCF tester was used for testing super finishing processes for gear surfaces. Verification of the second generation Rolling Contact Fatigue Tester will be discussed in this thesis including the design details, assembly and testing procedure and to discuss its different parameters. The tester will have the capability of testing hollow specimens using a bobbin eddy current testing probe. This tester will allow a wide range of experiments and is not built for one specific purpose.

An eddy current device is used for detecting cracks. The loading force is applied using hydraulic cylinders and a hydraulic power unit. Before testing began, the machine was run for some time at full speed. A lot of minor problems were detected and fixed. Three specimens of AISI were tested in this tester. All tests gave results matching with some of the other well-known RCF testers. These tests were performed to evaluate mechanical limits of the tester and to evaluate the software performance of the tester.

The tester system is able of running monitored PRBS traffic at 3. The present report presents the architectural hardware design, the control structure and software aspects of the AdvancedTCA Backplane Tester design. Color -based scale-invariant feature detection applied in robot vision. The scale-invariant feature detecting methods always require a lot of computation yet sometimes still fail to meet the real-time demands in robot vision fields.

To solve the problem, a quick method for detecting interest points is presented. To decrease the computation time, the detector selects as interest points those whose scale normalized Laplacian values are the local extrema in the nonholonomic pyramid scale space. The descriptor is built with several subregions, whose width is proportional to the scale factor, and the coordinates of the descriptor are rotated in relation to the interest point orientation just like the SIFT descriptor.

The eigenvector is computed in the original color image and the mean values of the normalized color g and b in each subregion are chosen to be the factors of the eigenvector.

Johannes Kepler was the first scholar to propose that the retina was the receptive part of the eye. In the first half of the 17th century, Kepler’s groundbreaking optical achievements and anatomical discoveries of many other scientists cast new light on the understanding of the role of different eye structures, finally wiping out the intromission theory.

A further major achievement contributing to the recognition of the true nature of colors was a theory presented by Newton in He argued that they were colored rays, and not white light, that were composed of homogenous and pure light. It was, however, not until the 19th century when two modern theories of color appeared, i.

In the 20th century, the two theories–previously assumed as contradictory–were joined into the zone theories of color vision. Colors have their cultural and social meanings, as far as a very individual and personal interpretation.

In the former function they are used to illustrate some cultural and sociological phenomena; in the latter, they are helpful in. The organization of shape and color in vision and art. The aim of this work is to study the phenomenal organization of shape and color in vision and art in terms of microgenesis of the object perception and creation.

The idea of “microgenesis” is that the object perception and creation takes time to develop. Our hypothesis is that the roles of shape and color are extracted in sequential order and in the same order these roles are also used by artists to paint objects.

Boundary contours are coded before color contours. The microgenesis of the object formation was demonstrated i by introducing new conditions derived from the watercolor illusion, where the juxtaposed contours are displaced horizontally or vertically, and based on variations of Matisse’s Woman, ii by studying descriptions and replications of visual objects in adults and children of different ages, and iii by analyzing the linguistic sequence and organization in a free naming task of the attributes related to shape and color.

The results supported the idea of the microgenesis of the object perception, namely the temporal order in the formation of the roles of the object properties shape before color. Some general principles were extracted from the experimental results. They can be a starting point to explore a new domain focused on the microgenesis of shape and color within the more general problem of object organization, where integrated and multidisciplinary studies based on art and vision science can be very useful.

The organization of shape and color in Vision and Art. Full Text Available The aim of this work is to study the phenomenal organization of shape and color in vision and art in terms of microgenesis of the object perception and creation.

Meat is a complex material; heterogeneous with varying scattering and reflectance properties, so several factors can influence the instrumental assessment of meat color.

In order to assess whether two methods are equivalent, the variation due to these factors must be taken into account. A statistical analysis was conducted and showed that on a calibration sheet the two instruments are equally capable of measuring color. Careful studies of the different sources of variation enable an assessment of the order of magnitude of the variability between methods accounting for other sources of variation leading to the conclusion that color assessment using a multispectral vision system is superior to traditional colorimeter assessments.

Occupational exposure to solvents, including n-hexane, has been associated with acquired color vision defects. Blue-yellow defects are most common and may be due to neurotoxicity or retinal damage.

Acetone may potentiate the neurotoxicity of n-hexane. We present results on nonhexane solvent and hexane exposure and color vision from a cross-sectional study of automotive repair workers in the San Francisco Bay Area, California Cumulative exposure was estimated from self-reported work history, and color vision was assessed using the Lanthony desaturated D panel test. Log-binomial regression was used to estimate prevalence ratios for color vision defects.

Elevated prevalence ratios were found for nonhexane solvent exposure, with a maximum of 1. Cumulative exposures to hexane and nonhexane solvents in the highest exposure categories were associated with elevated prevalence ratios for color vision defects in younger participants. For permissions, please e-mail: journals.

Participants were 30 young adults with ADHD and 30 controls matched for age and gender. The ADHD group reported significantly more problems in 4 of 8 areas on the VAQ: depth perception, peripheral vision , visual search and visual processing speed.

A comprehensive investigation of mechanisms underlying visual function and color vision in adults with ADHD is warranted, along with the potential impact of these visual problems on driving performance.

Published by Elsevier Espana. Theoretical research on color indirect effects. Color indirect effects CIE means the physiological and psychological effects of color resulting from color vision.

In this paper, we study CIE from the viewpoints of the integrated western and Chinese traditional medicine and the time quantum theory established by C. Liu et al. Our theory is in agreement with modern color vision theory, and moreover, it leads to the resolution of the conflict between the color code theory and the time code theory oncolor vision.

For the latitude phenomena on athlete stars number and the average lifespan, we also discuss the possibility of UV vision. The applications of our theory lead to our succeeding in explaining a number of physiological and psychological effects of color , in explaining the effects of age on color vision , and in explaining the Chinese chromophototherapy. We also discuss its application to neuroimmunology.

This research provides the foundation of the clinical applications of chromophototherapy. Color vision tests comparison: Farnsworth D versus Lanthony D Disorder of color vision in humans is the inability to perceive differences between some or all of the colors that are normally perceived by others. Color blindness is usually a birth defect, a genetically determined. For this reason it is much more common in men than women. This paper presents the results of the test FarnsworthD and Lanthony D on a group of volunteers, both adults and children.

The study was conducted to compare the results of both tests. The most complete and lucid nonmathematical study of light available. Chapters are self-contained, making the book flexible and easy to read. Coverage includes such non-traditional topics as processes of vision and the eye, atmospherical optical phenomena, color perception and illusions, color in nature and in art, Kirilian photography, and holography. Includes experiments that can be carried out with simple equipment. Chapters contain optional advanced sections, and appendixes review the mathematics for quantitative aspects.

Illustrated, including a four- color insert. Color vision abnormality as an initial presentation of the complete type of congenital stationary night blindness. A year-old male who was at technical school showed abnormalities in the color perception test for employment, and was referred to our hospital for a detailed examination. He had no family history of color vision deficiency and no other symptoms. During the initial examination, his best-corrected visual acuity was 1.

His fundus showed no abnormalities except for somewhat yellowish reflex in the fovea of both eyes. There was no response in the rod ERG, either. From the findings of the typical ERG, the patient was diagnosed with complete congenital stationary night blindness. This case underscores the importance of ERG in order to diagnose the cause of a color vision anomaly. Assessing color vision loss among solvent-exposed workers. Acquired color vision loss has been associated with exposure to organic solvents in the workplace.

However, not all tests of chromatic discrimination loss are designed to detect acquired, as opposed to congenital, loss. The Lanthony D desaturated panel Dd , a simple 15 cap color arrangement test, designed to identify mild acquired dyschromatopsia, can be administered rapidly in the field, under standard conditions. The objective of the present study was to evaluate the Dd among 23 solvent-exposed workers of a paint manufacturing plant, by comparing the results obtained with the Dd to those obtained with the Farnsworth-Munsell Hue FM , a highly sensitive measure of color vision loss.

All dyschromatopic workers presented blue-yellow loss; the FM detected eight complex patterns, while the Dd identified 5. Comparison of Dd and FM scores were highly correlated corr.

Multiple regression analyses showed both scores to be significantly related to age and exposure level. The findings of this study indicate that the Dd is an adequate instrument for field study batteries.

However, the FM should be used for more detailed assessment. The evolution of opsins and color vision : connecting genotype to a complex phenotype. Full Text Available Dissecting the genetic basis of adaptive traits is key to our understanding of evolutionary processes.

A major and essential step in the study of evolutionary genetics is drawing link between genotype and phenotype, which depends on the difficult process of defining the phenotype at different levels, from functional to organismal.

Visual pigments are a key component of the visual system and their evolution could also provide important clues on the evolution of visual sensory system in response to sexual and natural selection. As a system in which genotype can be linked to phenotype, I will use visual pigments and color vision , particularly in birds, as a case of a complex phenotype. I aim to emphasize the difficulties in drawing the genotype-phenotype relationship for complex phenotypes and to highlight the challenges of doing so for color vision.

The use of vision -based receiver models to quantify animal colors and patterns is increasingly important in many fields of evolutionary research, spanning studies of mate choice, predation, camouflage and sensory ecology. Given these models impact on evolution and ecology, it is important to provide other researchers with the opportunity to better understand animal vision and the corresponding advantages and limitations of these models.

Accessible maps for the color vision deficient observers: past and present knowledge and future possibilities.

Color is part of the visual variables in map, serving an aesthetic part and as a guide of attention. Impaired color vision affects the ability to distinguish colors , which makes the task of decoding the map colors difficult. Map reading is reported as a challenging task for these observers, especially when the size of stimuli is small. The aim of this study is to review existing methods for map design for color vision deficient users.

A systematic review of research literature and case studies of map design for CVD observers has been conducted in order to give an overview of current knowledge and future research challenges. In addition, relevant research on simulations of CVD and color image enhancement for these observers from other fields of industry is included.

The study identified two main approaches: pre-processing by using accessible colors and post-processing by using enhancement methods. Some of the methods may be applied for maps, but requires tailoring of test images according to map types. Full Text Available Introduction: Color vision is one of the important attribute of visual perception. Method: A cross-sectional study was conducted among students of four schools of Kathmandu.

Assessment included visual acuity measurement, slit lamp examination of anterior segment and fundus examination with direct ophthalmoscopy. Each student was assessed with the Ishihara pseudoisochromatic test and the Farnsworth D test.

The Chi-square test was performed to analyse color vision defect detected by the Ishihara test and the Farnsworth D test. Results: A total of students comprising of males The prevalence of color vision defect as indicated by the Ishihara was 2. Conclusion: For school color vision screening, the Ishihara color test and the Farnsworth D test have equal capacity to detect congenital color vision defect and they complement each other.

Keywords: color vision ; children; defect; Farnsworth D; Ishihara. Patients with the complete form of congenital stationary night blindness CSNB often have reduced visual acuity, myopia, impaired night vision , and sometimes nystagmus and strabismus, however, they seldom complain of color vision abnormality.

The objective of this study was to evaluate the performance of color camera machine vision for lumber processing in a furniture rough mill. The study used red oak boards to compare the performance of automated gang-rip-first rough mill yield based on a prototype color camera lumber inspection system developed at Virginia Tech with both estimated optimum rough mill Color vision predicts processing modes of goal activation during action cascading.

One of the most important functions of cognitive control is action cascading: the ability to cope with multiple response options when confronted with various task goals. In this task it is possible to calculate an individual slope value for each participant that estimates the degree of overlap in task goal activation. When the stopping process of a previous task goal has not finished at the time the change process toward a new task goal is initiated parallel processing , the slope value becomes steeper.

In case of less overlap more serial processing , the slope value becomes flatter. As expected, participants showing better color vision were more prone to activate goals in a parallel manner as indicated by a steeper slope. Our findings suggest that color vision might represent a predictor of D2 efficiency and the predisposed processing mode of goal activation during action cascading.

Color vision loss in patients treated with chloroquine. Full Text Available Patients that make use of chloroquine or hydroxychloroquine, drugs which are frequently administered for treatment of rheumatoid arthritis, lupus erithromatosus or malaria, may suffer alterations in color vision and in contrast sensitivity.

Tests were performed monocularly with corrected eye refractive state. Color discrimination was evaluated using the Cambridge Colour Test CCT: the color discrimination threshold was measured first in the protan, deutan and tritan axes and, in succession, three MacAdam’s ellipses were determined.

We also measured the contrast sensitivity for black-and-white sine wave grating of twenty two patients. The results were compared with controls without ophthalmologic or neuro-ophthalmologic pathologies. Twenty four patients presented acquired dyschromatopsia. There were cases of selective loss 11 patients and of diffuse loss 13 patients. Although losses were present in the FM there was no correlation between the FM error score and the ellipse area measured by the CCT.

Moreover, three patients that scored normal in the FM, failed to reach normal threshold in the CCT. The Lanthony test was less sensitive than the other two tests, since it failed to indicate loss in about.

Computer vision system in real-time for color determination on flat surface food. Full Text Available Artificial vision systems also known as computer vision are potent quality inspection tools, which can be applied in pattern recognition for fruits and vegetables analysis. The aim of this research was to design, implement and calibrate a new computer vision system CVS in real-time for the color measurement on flat surface food. For this purpose was designed and implemented a device capable of performing this task software and hardware, which consisted of two phases: a image acquisition and b image processing and analysis.

Both the algorithm and the graphical interface GUI were developed in Matlab. The aim of this research was to design, implement and calibrate a new computer vision system CVS in real – time f or the color measurement on flat surface food.

Both th e algorithm and the graphical interface GUI were developed in Matlab. Aim: To assess the difficulties encountered by students with congenital color vision defects in daily living and school activities. Structured questionnaires were administered to all consenting students to The Disunity of Color. What is color? What is color vision? Most philosophers answer by reference to humans: to human color qualia, or to the environmental properties or “quality spaces” perceived by humans.

It is argued, with reference to empirical findings concerning comparative color vision and the evolution of color vision , that all such attempts are mistaken. An adequate definition of color vision must eschew reference to its outputs in the human cognition and refer only to inputs: color vision consists in Qualitative evaluations and comparisons of six night- vision colorization methods.

Current multispectral night vision NV colorization techniques can manipulate images to produce colorized images that closely resemble natural scenes. The colorized NV images can enhance human perception by improving observer object classification and reaction times especially for low light conditions.

This paper focuses on the qualitative subjective evaluations and comparisons of six NV colorization methods. Four categries of quality measurements are used for the qualitative evaluations, which are contrast, detail, colorfulness , and overall quality. The score of each measurement is rated from 1 to 3 scale to represent low, average, and high quality, respectively. Specifically, high contrast of rated score 3 means an adequate level of brightness and contrast.

The high detail represents high clarity of detailed contents while maintaining low artifacts. The high colorfulness preserves more natural colors i. Overall quality is determined from the NV image compared to the reference image. Nine sets of multispectral NV images were used in our experiments. A total of 67 subjects passed a screening test “Ishihara Color Blindness Test” and were asked to evaluate the 9-set colorized images.

The experimental results showed the quality order of colorization methods from the best to the worst: CBCF colorization and for quantitative evaluation using an objective metric such as objective evaluation index. Comparison of the color of natural teeth measured by a colorimeter and Shade Vision System. The objectives were to measure the difference in the color and color parameters of natural teeth measured by a tristimulus colorimeter CM, used as a reference and Shade Vision System SV , and to determine the influence of color parameters on the color difference between the values measured by two instruments.

Difference in hue angle was high as Except for the hue angle, all the color parameters showed significant correlations and the coefficient of determination r 2 was in the range of 0.

Based on multiple regression analysis, the standardized partial correlation coefficient beta of the included predictors for the color difference was When lightness and chroma of teeth were high, color difference between the values measured by two instruments was small. Clinical accuracy of two instruments should be investigated further. Measurement of meat color using a computer vision system. The limits of the colorimeter and a technique of image analysis in evaluating the color of beef, pork, and chicken were investigated.

The Minolta CR colorimeter and a computer vision system CVS were employed to measure colorimetric characteristics. To evaluate the chromatic fidelity of the image of the sample displayed on the monitor, a similarity test was carried out using a trained panel. The panelists found the digital images of the samples visualized on the monitor very similar to the actual ones Pmeat sample and the sample image on the monitor in order to evaluate the similarity between them test A.

Moreover, the panelists were asked to evaluate the similarity between two colors , both generated by the software Adobe Photoshop CS3 one using the L, a and b values read by the colorimeter and the other obtained using the CVS test B ; which of the two colors was more similar to the sample visualized on the monitor was also assessed test C.

The panelists found the digital images very similar to the actual samples Pcolors the panelists found significant differences between them Pcolor of the sample on the monitor was more similar to the CVS generated color than to the colorimeter generated color. The differences between the values of the L, a, b, hue angle and chroma obtained with the CVS and the colorimeter were statistically significant Pcolor of meat.

Instead, the CVS method seemed to give valid measurements that reproduced a color very similar to the real one. Ripeness classification of oil palm fresh fruit bunches FFBs during harvesting is important to ensure that they are harvested during optimum stage for maximum oil production. This paper presents the application of color vision for automated ripeness classification of oil palm FFB.

Then the color features were extracted from those images and used as the inputs for Artificial Ne Advances in understanding the molecular basis of the first steps in color vision.

Serving as one of our primary environmental inputs, vision is the most sophisticated sensory system in humans. Here, we present recent findings derived from energetics, genetics and physiology that provide a more advanced understanding of color perception in mammals. Energetics of cis—trans isomerization of cis-retinal accounts for color perception in the narrow region of the electromagnetic spectrum and how human eyes can absorb light in the near infrared IR range.

Structural homology models of visual pigments reveal complex interactions of the protein moieties with the light sensitive chromophore cis-retinal and that certain color blinding mutations impair secondary structural elements of these G protein-coupled receptors GPCRs.

Finally, we identify unsolved critical aspects of color tuning that require future investigation. High-speed potato grading and quality inspection based on a color vision system. A high-speed machine vision system for the quality inspection and grading of potatoes has been developed.

The vision system grades potatoes on size, shape and external defects such as greening, mechanical damages, rhizoctonia, silver scab, common scab, cracks and growth cracks.

A 3-CCD line-scan camera inspects the potatoes in flight as they pass under the camera. The use of mirrors to obtain a degree view of the potato and the lack of product holders guarantee a full view of the potato. The color segmentation procedure uses Linear Discriminant Analysis LDA in combination with a Mahalanobis distance classifier to classify the pixels. The procedure for the detection of misshapen potatoes uses a Fourier based shape classification technique.

Features such as area, eccentricity and central moments are used to discriminate between similar colored defects. Experiments with red and yellow skin- colored potatoes have shown that the system is robust and consistent in its classification.

The effects upon range of accommodation and color vision of reduced atmospheric pressure, at partial and complete elimination of nitrogen, of hypoxia, and of exposure for varying periods of time to restricted visual environment, have been studied alone or in various combinations. Measurements were made on the electroretinogram, the electrooculogram, and the diameter of the retinal vessels as an indicator of blood flow to the retina at the time of total elimination of nitrogen.

An objective method was used to test range of accommodation. In the color vision test the flicker colors of a Benham’s top were matched with a colorimeter. New experimental diffractive-optical data on E. Land’s Retinex mechanism in human color vision : Part II. A better understanding of the color constancy mechanism in human color vision [7] can be reached through analyses of photometric data of all illuminants and patches Mondrians or other visible objects involved in visual experiments.

In Part I [3] and in [4, 5 and 6] the integration in the human eye of the geometrical-optical imaging hardware and the diffractive-optical hardware has been described and illustrated Fig.

The hardware relevant to photopic human color vision can be described as a diffractive or interference-optical correlator transforming incident light into diffractive-optical RGB data and relating local RGB onto global RGB data in the near-field behind the ‘inverted’ human retina.

Signatures of functional constraint at aye-aye opsin genes: the potential of adaptive color vision in a nocturnal primate. While color vision perception is thought to be adaptively correlated with foraging efficiency for diurnal mammals, those that forage exclusively at night may not need color vision nor have the capacity for it.

Indeed, although the basic condition for mammals is dichromacy, diverse nocturnal mammals have only monochromatic vision , resulting from functional loss of the short-wavelength sensitive opsin gene.

However, many nocturnal primates maintain intact two opsin genes and thus have dichromatic capacity. The evolutionary significance of this surprising observation has not yet been elucidated. We used a molecular population genetics approach to test evolutionary hypotheses for the two intact opsin genes of the fully nocturnal aye-aye Daubentonia madagascariensis , a highly unusual and endangered Madagascar primate.

No evidence of gene degradation in either opsin gene was observed for any of 8 aye-aye individuals examined. The most likely explanation for these findings is that dichromacy is advantageous for aye-ayes despite their nocturnal activity pattern. We speculate that dichromatic nocturnal primates may be able to perceive color while foraging under moonlight conditions, and suggest that behavioral and ecological comparisons among dichromatic and monochromatic nocturnal primates will help to elucidate the specific activities for which color vision perception is advantageous.

Basic design principles of colorimetric vision systems. Color measurement is an important part of overall production quality control in textile, coating, plastics, food, paper and other industries. The color measurement instruments such as colorimeters and spectrophotometers, used for production quality control have many limitations. In many applications they cannot be used for a variety of reasons and have to be replaced with human operators. Machine vision has great potential for color measurement.

The components for color machine vision systems, such as broadcast quality 3-CCD cameras, fast and inexpensive PCI frame grabbers, and sophisticated image processing software packages are available. However the machine vision industry has only started to approach the color domain. The few color machine vision systems on the market, produced by the largest machine vision manufacturers have very limited capabilities.

A lack of understanding that a vision based color measurement system could fail if it ignores the basic principles of colorimetry is the main reason for the slow progress of color vision systems. The subject of this presentation far exceeds the limitations of a journal paper so only the most important aspects will be discussed. An overview of the major areas of applications for colorimetric vision system will be discussed.

Finally, the reasons why some customers are happy with their vision systems and some are not will be analyzed. Simulation of the color vision : decoding quantum-electric transduction.

Full Text Available We propose an experimental simulation, using accessible and low cost materials, on the biophysical mechanism of the color vision in accordance with the Young-Helmholtz s Trichromatic Theory, approaching mainly the coding and decoding process of electric signs that arrive to the cerebral cortex. The stimulus that unchains this process is given through transformation of the quantized energy of a light photon that takes place in the photocells of the retina of the human eye.

The construction of a simple system of collection and analysis of data, using a multimeter, filters, LDR and LEDs allows us to establish connections between the visual system and the simulation model. Although color vision deficiency CVD is fairly common, it is often not adequately considered when data is presented in color graphics. This study found that CVD tends to be mentioned neither in the author guidelines of psychology journals nor in the standard publication manuals of the field e.

To illustrate the relevance of this problem, a panel of scholars with CVD was used to evaluate the color figures in three respected psychological science journals. Results suggested that a substantial proportion of those figures were needlessly confusing for viewers with CVD and could have been easily improved through simple adjustments. Based on prior literature and on feedback from the panelists, recommendations are made for improving the accessibility of graphics in psychology reports.

I studied two genetic diseases, retinitis pigmentosa RP and color vision anomaly, in Kamigoto, one of the off-shore islands in Nagasaki Prefecture. The Prevalance of RP patients in this island was estimated to be one in persons.

Among the RP patients observed, familial cases whose disorders are transmitted through successive generations comprised Although it seems that the inheritance mode of RP in these familial cases is autosomal dominant, an autosomal recessive fashion showing quasi-dominance cannot be ruled out, because inbreeding frequently occurs on this island. There were at least two types of RP, one with late onset 40 years of age or later and the other with early onset, and patients with the latter RP tended to have a poor prognosis.

Only a few RP patients had posterior subcapsular cataract, and none had pseudexfoliation in spite of advanced age. Color vision anomalies were found in 3. The prevalence in boys was comparable to that in the general Japanese population, but the prevalence in girls was higher in Kamigoto than in other districts. A new technique for robot vision in autonomous underwater vehicles using the color shift in underwater imaging.

Jones June Thesis Advisor It can be useful to present a different image to each of the two eyes while they cooperatively view the world. Such dichoptic presentation can occur in investigations of stereoscopic and binocular vision e.

Various techniques have been used to construct dichoptic displays. The most common and most flexible modern technique uses liquid-crystal LC shutters. When used in combination with cathode ray tube CRT displays, there is often leakage of light from the image intended for one eye into the view of the other eye. While such crosstalk may have minimal impact on stereo movie or video game experiences, it can defeat clinical and research investigations.

The DLP system normally uses a color wheel to display color images. Our approach is to disable the color wheel, synchronize the display directly to the computer’s sync signal, allocate each of the three former color presentations to one or both eyes, and open and close the LC shutters in synchrony with those color events.

Epistatic adaptive evolution of human color vision. Full Text Available Establishing genotype-phenotype relationship is the key to understand the molecular mechanism of phenotypic adaptation. This initial step may be untangled by analyzing appropriate ancestral molecules, but it is a daunting task to recapitulate the evolution of non-additive epistatic interactions of amino acids and function of a protein separately.

To adapt to the ultraviolet UV-free retinal environment, the short wavelength-sensitive SWS1 visual pigment in human human S1 switched from detecting UV to absorbing blue light during the last 90 million years. Mutagenesis experiments of the UV-sensitive pigment in the Boreoeutherian ancestor show that the blue-sensitivity was achieved by seven mutations.

The experimental and quantum chemical analyses show that 4, of all 5, possible evolutionary trajectories are terminated prematurely by containing a dehydrated nonfunctional pigment. Phylogenetic analysis further suggests that human ancestors achieved the blue-sensitivity gradually and almost exclusively by epistasis.

The adaptive evolution of human S1 differs dramatically from orthologous pigments with a major mutational effect used in achieving blue-sensitivity in a fish and several mammalian species and in regaining UV vision in birds.

These observations imply that the mechanisms of epistatic interactions must be understood by studying various orthologues in different species that have adapted to various ecological and physiological environments. Relative advantages of dichromatic and trichromatic color vision in camouflage breaking. There is huge diversity in visual systems and color discrimination abilities, thought to stem from an animal’s ecology and life history. Many primate species maintain a polymorphism in color vision , whereby most individuals are dichromats but some females are trichromats, implying that selection sometimes favors dichromatic vision.

Detecting camouflaged prey is thought to be a task where dichromatic individuals could have an advantage. However, previous work either has not been able to disentangle camouflage detection from other ecological or social explanations, or did not use biologically relevant cryptic stimuli to test this hypothesis under controlled conditions. Here, we used online “citizen science” games to test how quickly humans could detect cryptic birds incubating nightjars and eggs of nightjars, plovers and coursers under trichromatic and simulated dichromatic viewing conditions.

Trichromats had an overall advantage, although there were significant differences in performance between viewing conditions. When searching for consistently shaped and patterned adult nightjars, simulated dichromats were more heavily influenced by the degree of pattern difference than were trichromats, and were poorer at detecting prey with inferior pattern and luminance camouflage.

When searching for clutches of eggs-which were more variable in appearance and shape than the adult nightjars-the simulated dichromats learnt to detect the clutches faster, but were less sensitive to subtle luminance differences.

These results suggest there are substantial differences in the cues available under viewing conditions that simulate different receptor types, and that these interact with the scene in complex ways to affect camouflage breaking. Color blindness among multiple sclerosis patients in Isfahan. Multiple sclerosis MS is a disease of young and middle aged individuals with a demyelinative axonal damage nature in central nervous system that causes various signs and symptoms.

As color vision needs normal function of optic nerve and macula, it is proposed that MS can alter it via influencing optic nerve. In this survey, we evaluated color vision abnormalities and its relationship with history of optic neuritis and abnormal visual evoked potentials VEPs among MS patients. The case group was included of clinically definitive MS patients and the same number of normal population was enrolled as the control group. Color vision of all the participants was evaluated by Ishihara test and then visual evoked potential VEPs and history of optic neuritis ON was assessed among them.

Then, frequency of color blindness was compared between the case and the control group. This study demonstrates a significant correlation between color blindness and multiple sclerosis including ones with abnormal prolonged VEP latencies. Therefore, in individuals with acquired color vision impairment, an evaluation for potentially serious underlying diseases like MS is essential.

The individual hired will be responsible for the initial nursing assessment of clients when they present to the Crisis Care Center to assure stabilization.

This individual will also interpret medical information and assist or administer medications. Description: Obtain medical histories and provide medical screening.

Monitors changes in the health status, including but not limited to vital signs, weights, nutritional needs, and other medical condition states.

Manage the medication room i. Complete daily charting for LPN i. Assists in the coordination and implementation of discharge plans to outside community agencies and providers. Follow-up on medical concerns by providing direct nursing services to clients. Monitors with or without observation, withdrawal complications, possible medication side effects and emerging symptoms of mental illness.

Maintains up to date, well documented medical records in compliance with state and program requirements. Participates in treatment team meetings as a member of the multidisciplinary team. Perform safe phlebotomy practices when collecting blood. Addresses medication issues with clients when necessary and provides proper education and guidance. Accurately transcribe all verbal and written orders by the Provider i.

Familiarity with psychotropic and neuroleptic drugs, their uses as well as potential side effects. Valid Alabama drivers license. Knowledge of the seriously mentally ill and substance use population. Assessment skills in the areas of physical and mental status.

Familiarity with psychotropic and neuroleptic drugs, their uses, and potential side effects. Knowledge of legal and ethical issues relative to confidentiality of client records and the ability to interpret and apply them within the scope of the nursing responsibilities. Working knowledge of interviewing techniques and principles. Effective communication skills, written and expressive. Ability and willingness to document activities and maintain records in the electronic health record.

Trained in or willing to be trained in crisis intervention, specifically Therapeutic Options Contact: Ipella V. We are seeking a photographer with the ability to capture the essence of what’s happening in the field, and then bring it vividly into the homes of our viewers. This member of our team will spend several hours each day editing for newscasts and several hours each day out in the field shooting, editing, and executing live shots for stories.

The winning candidate is also tech savvy and up-to-date on the most modern aspects of our medium. Excellent editing skills, exceptional time-management abilities, effective communication style, organization, and knowledge of Adobe Premiere, Precis, ABC and CNN platforms are critical.

An excellent eye for video and the highest journalistic standards are a must. If you are quick acting, quicker thinking, and technically savvy, we want you working in our newsroom. Working with the Assignment Desk and Reporters to cover daily stories. Gathers video and still pictures for digital platforms. Working with reporters and producers to ensure the best content and facts are gathered.

Working with producers to ensure their creative vision is executed with vivid video and natural sound. Communicating and coordinating incoming video elements from crews in the field. Can work with catalog systems to record and locate necessary video.

Will produce and publish content to our online platforms. In-person attendance is required. Previous newsroom experience preferred. Can easily carry up to 50 pounds of equipment. Efficient Operation on ENG trucks. Can work in all weather conditions.

Can operate large vehicles, must have a valid driver’s license and a near-perfect driving record. Exceptional ability to operate digital editing tools. Can organize and prioritize. Must be a self-starter – someone who doesn’t wait to be told what to do. Ability to work under pressure, making quick decisions. The Crisis Care Liaison will build and maintain mutually beneficial relationships, facilitate communications and coordinate activities between individuals served by the Crisis Care Center and Community Mental Health Organizations.

The Crisis Care Liaison is responsible for being the main point of contact for individuals transitioning from the Crisis Care Center after they have been stabilized.

The Crisis Care Liaison will provide case management services and aid in obtaining and coordinating social and maintenance services for individuals once discharged into the community. Description: Responsible for providing direct case management services to individuals discharged from the Crisis Care Center. Responsible for being the single point of contact for persons transitioning from the Crisis Care Center. Determine and identify resources that would meet the needs of the clients in their catchment area and provide transportation if needed to and from appointments.

Prepare a plan for the provision of community mental health services to the targeted individual involved, review such plan and provide and document all follow-up care. Aid in obtaining and coordinating social and maintenance services for the individual, including services relating to daily living activities, habilitation and rehabilitation services, prevocational and vocational services, and housing services.

Coordinate and communicate with community mental health organizations regarding clients status and progress. Maintain high quality and timely documentation.

Assist clinicians and case managers in the discharge planning process. Perform all administrative duties as required Qualifications: Bachelors degree in social work, psychology, counseling or other human service field.

Experience working in case management or outreach preferred. Valid Alabama driver’s license and a suitable automobile to permit the required travel. Must be insurable and maintain insurability under JBS’s automobile insurance carrier’s standards.

Must show and maintain car insurance equal to or in excess of the State of Alabama standards for automobile insurance coverage. Excellent oral and written communication skills. Knowledge of Community Resources and Services. Knowledge of seriously mentally ill and substance use population. Ability to work autonomously. Knowledge of the rules and regulations governing the human services provider agencies in the catchment area.

Knowledge of the legal and ethical issues relative to confidentiality of client records and the ability to interpret and apply them within the scope of the case management responsibilities. Ability to communicate effectively with a multi-disciplinary team. Knowledge of casework principles and methods related to case management. Working knowledge of clinical interviewing techniques and principles. Trained in or willing to be trained in crisis intervention, specifically Therapeutic Options.

Skills in interpersonal relationships and dynamics. Considerable written and expressive communication skill. Contact: Ipella V. The right candidate will have a track record of being creative, aggressive, have the ability to make decisions and communicate the plan in a clear, concise manner. We expect excellent news judgment and a can do attitude. Candidates must have a proven track record of winning the big story, breaking news and weather. Candidates must be fast and calm under pressure and able to play well in a room of same-minded pros Description: Selecting, researching and writing content for live newscasts to make the newscast an experience for viewers.

Working with and guiding reporters in story production. Communicating, coordinating and executing creative vision with team of anchors, reporters, meteorologists, photographers, editors, and production staff. Creative presentation style. Experience in a newsroom, the ability to remain calm under pressure and knowledge of ENPS are pluses.

Excellent writing, spelling, grammar and copy-editing skills. Ability to multi-task and coordinate several crews and responsibilities simultaneously. An ability to summarize information into easy-to-understand components. Creative presentation style, and ability to showcase all resources and elements.

Unwavering journalistic integrity and ethical standards. Must be available to work holidays, shifts that include nights, weekends and overnights, and flexible with schedule to be available during breaking news To Apply: careers. Monday — Friday Part time: a. The Case Manager position is a direct service provider and an information and referral agent for individuals served by the Crisis Care Center. The Case Manager will be responsible for coordinating discharge planning and warm handoffs with community providers for individuals after they have been stabilized at the Crisis Care Center.

Description: Provide access to a wide range of services for clients of the Crisis Care Center. Properly assess needs and devise an individualized service plan for each client. Develop and effectively implement discharge plans and follow-up services for clients. Serves as a liaison between the client and various service providers to ensure continuity of care. Effectively implement written discharge goals of the treatment plans. Develop and maintain adequately detailed and accurate client records.

Provide transportation to clients when necessary. Perform all administrative duties as required Qualifications: Bachelors degree in social work, psychology, counseling or other human services field.

Knowledge of the community and available community resources. Acquainted with the use and side effects of psychotropic medications. Ability to use a computer for client record keeping and able to perform basic navigation functions in an electronic medical record. Knowledge of accessing medication assistance for clients with no resources.

Description: Follow all policies and procedures related to specimen collection. Must be able to enter data in a fast-paced environment without errors. Resolves and documents problem specimens. Complete assignments with accuracy in a timely manner without compromising the quality of the patient sample.

Qualifications: years of medical experience. Must be willing to work 1st shift and possibly weekend only shift. Currently Licensure as a CNA. Attention to detail and critical thinking skills. Ability to work in a fast paced, multi-tasking environment and maintain production and quality standards determined by the clinical laboratory. Valid Driver’s License and reliable transportation. Must be a Team Player. Will be asked to perform duties at different locations. Must have Customer Service skills.

Must have a professional appearance. Nails must be kept no longer than fingertips. Must be able to multitask. Greenville SC, , www. The FBI has opportunities for all educational paths. Opportunity: Are you looking for a small, warm and intimate group practice setting where we value Quality Care, Competency, and Inclusivity? Are you an animal lover who embraces the idea of incorporating therapy pets into your practice?

Then ACA is the place for you! Candidates who are currently paneled with insurance are preferred but we will help with credentialing for the right person. Now is a great time to make the move to private practice; we have a high volume of new clients and our counselors are generally starting with full caseloads.

This role will work on building a loyal, local audience by being responsive to traffic patterns and audience interest while serving as a steward of our brands. Write stories for the web and other digital platforms. Curate and aggregate a steady stream of interesting content that is packaged and promoted in a way that generates engagement and repeat site visitation.

Monitor all forms of media print, TV, digital, blogs and social for breaking news stories and always on the hunt for exclusive and or trending content that will grow engagement and drive loyal, local traffic.

Expert understanding of Facebook, Twitter, Instagram and other social media platforms. Write excellent headlines that grow audience and engagement. Prioritize packaging content that grows page views per visitor and time on site, using headline testing, metric tools and observed patterns to guide decision making. Reviews all copy and will correct errors in content, grammar and punctuation following AP Style and formatting guidelines. Research and analyze background information related to news stories in order to be able to provide complete and accurate information.

Gathers information about events through research, interviews, experience or attendance at political, news, sports, artistic, social or other functions. Checks reference material such as books, news files, public records to obtain relevant facts. Shoots and edits content for digital and occasionally on-air. Understand different ways to tell a story, particularly producing short videos and choosing great photos.

Evaluate website traffic trends to make decisions on both daily content needs and longer-term content curation that will grow local audience. Flexibility to perform duties. Build positive working relationships with newsroom staff and management, work collaboratively on enterprise content, and creating opportunities to market web content on broadcast. Promote and distribute news content on social media. Understanding of Google Analytics, Chartbeat is a plus.

Strong multi-tasking abilities. Organized, technical problem solver and quick decision maker. Capable of researching, interviewing and writing original news articles. Enjoys working in teams and has excellent interpersonal skills.

Some schedule flexibility early mornings, nights, weekends. Maintain positive work environment through active team participation and cooperation with co-workers in all departments. Responds positively to feedback. Contact: Regina Tom at rtom nexstar. Travel maybe required to see customers along with participating in various industry events. Handle all of the customer service functions including answering phone calls and e-mails in a timely manner, accurate and timely order entry, creating and running reports, following orders from entry through shipment.

Biggest prerequisites are as follows: A candidate must have an interest in sales and marketing. Have an eagerness to learn and work well within a team. Someone looking for a career, not a job. We are a division within a strong Fortune company Steel Dynamics Inc.

To Apply: Send resume. Respond To: Brent Thorson, Brent. The PSR II draws quality blood samples from patients and prepares those specimens for lab testing while following established practices and procedures. The PSR II has direct contact with patients and creates an atmosphere of trust and confidence while explaining procedures to patients and drawing blood specimens in a skillful, safe and accurate manner. The PSR II will demonstrate Quest Leadership Behaviors while focusing on process excellence skills and sensitivity to confidentiality and accuracy to patient information.

Successful applicants may be assigned to a doctor’s office, a patient service center, in a house call environment, long term care or as business needs dictate. Collect specimens according to established procedures. This includes, but not limited to: drug screens, biometric screening and insurance exams.

Administer oral solutions according to established training. Responsible for completing all data entry requirements accurately including data entry of patient registration; entry of test order from requisition or pulling order from database; managing Standing Orders.

Enter billing information and collect payments when required, including the safeguarding of assets and credit card information. Data entry and processing specimens including: labeling, centrifuging, splitting, and freezing specimens as required by test order. Perform departmental-related clerical duties when assigned such as data entry, inventory, stock supplies, and answer phones when needed. Read, understand and comply with departmental policies, protocols and procedures: i.

Assist with compilation and submission of monthly statistics and data. Maintain all appropriate phlebotomy logs in a timely manner and based on frequency, such as maintenance logs and temperature logs. Complete training courses and keep up-to-date with the latest phlebotomy techniques.

Travel to Territory Manager meeting if held off-site or off normal shift. Participate on special projects and teams. Stay-up-to date on company communications and assist with the distribution of technical information to the work group.

With appropriate training, act as mentor and resource for new employees, assisting with transition into the PSC work environment and the familiarity with established procedures. Assist with periodic inventory counts, report shortages and problems to group leader or supervisor as they occur.

Assist with the preparation of schedules for the assigned work group or PSC’s. Communicate professionally with clients to resolve or refer, and document problems, prepare problem documentation and report critical issues as they occur. Ensure staff is following all safety precautions by wearing a clean, button lab coat, gloves and face shield when required. Assist supervisors with the implementation of SOPs for phlebotomy services in accordance with Quest Diagnostics guidelines. Ensure facilities are neat, clean and in good repair, takes appropriate action to advise Group Leader or Supervisor of required repairs and maintenance.

Will be required to act as a coach, mentor, instructor and resource advisor for new employees, as well as be the point of contact to staff on site and provide regular input to the group lead or supervisor. Qualifications: 1. Ability to provide quality, error free work in a fast-paced environment. Ability to work independently with minimal on-site supervision. Excellent phlebotomy skills to include pediatric and geriatric. Flexible and available based on staffing needs, which includes weekends, holidays, on-call and overtime.

Must be able to make decisions based on established procedures and exercise good judgment. Must have reliable transportation, valid driver license, and clean driving record, if applicable. Capable of handling multiple priorities in a high volume setting. Must demonstrate Superior Customer Focus; ability to communicate openly and transparently with peers, supervisors and patients; ability to accelerate and embrace change throughout Quest; and Knowledge of our business. Required Education: 1.

High school diploma or equivalent. Medical training: medical assistant or paramedic training preferred. Phlebotomy certification preferred. Required in California, Nevada, Washington, and Louisiana. Work Experience: 1. Three years phlebotomy experience required, inclusive of pediatric, geriatric and capillary collections.

Minimum 2 years in a Patient Service Center environment preferred. Customer service in a retail or service environment preferred. Description: The News Photographer operates television or video cameras to record images or scenes for news reports. Shoots video for news reports. Confers with other personnel to discuss assignments, logistics and shot requirements. Sets up, composes and executes video shots. Maintains video equipment. Edits video clips for television broadcasts and eMedia content.

High school diploma. Excellent communication skills, both oral and written. Proficiency with video recording equipment. Ability to meet deadlines, prioritize assignments and handle multiple tasks simultaneously. Flexibility to work any shift. Contact: Regina Tom, rtom nexstar.

Opportunity: Friday — Sunday am — pm. Individuals are responsible for handling of product at the case and pallet level to include counting, verifying, separating, picking, stocking, scanning, moving, updating, etc.

Move merchandise to other Distribution Center areas as needed. Loads and unloads merchandise onto or from pallet, tray, racks, and shelves by hand. Lifts heavy objects by hand, team lifting, or power equipment. Ensures cases and pallets are correctly sorted. Description: Maintain a clean work area and common areas. Follow safety rules and report hazards to a Distribution Area Manager.

Transporting, loading and unloading trailers to include using power equipment, conveyors and by hand. Reads work order or follows oral instructions to ascertain merchandise or containers to be moved.

Loads and unloads merchandise onto or from pallets, trays, racks, and shelves by hand. Lifts heavy objects by hand, team lifting, or with power equipment. Regular physical attendance is essential for the performance of the job. Demonstrate good organizational and time management skills. Maintaining performance standards of speed and accuracy with minimum damage and maximum safety.

Assists other department personnel in the performance of work activities when peak workloads require or during absences of personnel. Completes special projects and tasks as necessary. Demonstrate strong interpersonal skills and ability to build positive working relationships. Contributes to team effort by accomplishing related results as needed. Qualifications: To perform this job successfully, an individual must be able to perform each essential duty satisfactorily.

Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. High school diploma or general education degree GED required. Must be able to pass a criminal background check and a drug screen. Ability to read and interpret documents such as safety rules, operating and maintenance instructions, and procedure manuals. Ability to write routine reports and correspondence.

Ability to speak effectively before groups of customers or employees of organization. Ability to add, subtract, multiply, and divide in all units of measure, using whole numbers, common fractions, and decimals. Must demonstrate the ability to count accurately. Ability to apply common sense understanding to carry out instructions furnished in written, oral, or diagram form. Ability to deal with problems involving several concrete variables in standardized situations.

Ability to determine and shift priorities quickly as needed or as directed. Ability to follow directions thoroughly and efficiently. The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.

While performing the duties of this job, the employee is frequently required to stand; walk; use hands to type, grip, handle or feel; reach with hands and arms, including reaching overhead; and talk or hear. The employee is occasionally required to stoop, kneel, crouch, or crawl. The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job.

While performing the duties of this job, the employee is frequently exposed to moving mechanical parts and conveyor systems. The work environment is a typical logistics, distribution center, warehouse environment.

Work is performed within a warehouse environment, which includes the use of standard warehouse equipment. Must be able to concentrate in a fast-paced environment. Must be comfortable around powered industrial vehicles. The environment can be warmer or cooler depending on climate.

Alabaster, AL , Chasity. Williams hibbett. Want to grow your sales career with one of the fastest growing auto insurers in the country?

Start a new career in omni-channel sales? What makes Direct Auto Insurance unique? No insurance license?

We offer paid licensing training! We are Great Place to Work certified! We have many advancement opportunities! Ability to sell a multitude of industry-leading products through retail stores and phone! Entrepreneurial, performance-based, and results-focused culture! Multi-tiered and comprehensive paid training program! Comprehensive benefits! No cold calling — We have the leads for you!

Trainee: Provide the opportunity for motivated individuals to obtain industry experience working in a sales and customer support role while preparing and training to become a Licensed Insurance Sales Agent. Individual will assist customers, complete marketing activities and help with all office functions under direct guidance of an Agent or Lead Sales Agent. Prepare to become a licensed agent through attending appropriate courses, self-study, participation in training activities and job shadowing of agents to learn skills and accumulate experience.

Provide general clerical and administrative support to staff including handling inbound and outbound phone calls, reports, filing, researching and gathering information, and maintaining overall appearance of sales office.

Complete marketing and sales related activities which further the Direct Auto brand in the local market outbound marketing calls, car dealerships visits, local events, distribution of flyers, etc.

Contact customers regarding account status and renewals Agent: Responsible for the profitable growth and the attainment of business goals by marketing and servicing Direct Auto products including but not limited to Auto, Life, Auto Club, and Roadside Assistance to new and existing customers. Assist walk-in customers, support office operations and market our products outside of the office via marketing calls and visits.

Meet and exceed sale’s goals through new product sales, cross selling and retention of current customers. Implement marketing programs and initiatives which further the Direct Auto brand in the local market car dealerships, local events, etc. Build and maintain relationships with community organizations and local business. Develop and manage customer relationships and serve as a resource to customers and potential customers on all Direct Auto products and services.

Understand, promote and remain current on company underwriting guidelines, announcements, and memos related to changes in company policies and procedures. Responsible for sales administration and reporting activities. Qualifications: High school diploma or GED. Demonstrated ability to provide excellent customer service and develop and maintain customer relationships.

Experience or strong willingness to develop key relationships and market our products within community organizations and the local business community. Valid U. Strong computer skills and working knowledge of MS Office applications. Highly motivated to market and sell in multi-product environment where cross selling and customer retention is essential to sales budget attainment. Must possess effective verbal and written communication skills. Serve as an ambassador to the community by representing the station at community events and activities Qualifications:.

Mastery of AP writing style to author digital, social, and on-air content. Confident and capable videographer who is able to gather compelling visuals, strong natural sound, and solid interviews with field video gear to produce visual storytelling Strong non-linear video editing skills required familiarity with Adobe Premiere video editing software preferred. Strong news judgment and high journalistic integrity.

SSA benefit programs serve young and old, wealthy and poor, your family and the family next door — people from all walks of life. Description: Provide assistance to beneficiaries and the general public in person, by telephone, or in writing to provide information on SSA laws, rules and regulations and Medicare Insurance Programs.

This includes obtaining information in order to determine eligibility and entitlement for programs administered by SSA and using automation tools to access and update information about claims or potential eligibility. Qualifications: To qualify, you must be a U. Additional qualifications are listed in the job announcement online. The Noncompetitive Hiring Authorities listed on the right may be available, but you still need to meet the minimum qualification requirements.

No prior Social Security knowledge or experience is required. Note to Persons wiuth Disabilities: Schedule A refers to a Excepted Service hiring authority that gives federal agencies an optional, and potentially quicker, way to hire individuals. Certain individuals with disabilities fall under Schedule A. To be eligible, the applicant must provide proof of disability in the form of a letter from a doctor, a licensed medical professional, a licensed vocational rehabilitation specialist or any federal, state, or local agency that issues disability benefits.

Benefits: 13 paid vacation days a year, 20 days after 3 years, 26 days after 15 years, 13 days paid sick leave each year, 11 paid Federal holidays, Health benefits including medical, dental, and vision, Life insurance, , Pension benefits under the Federal Employees Retirement System, An optional Thrift Savings Plan similar to K with government match of employee contributions up to 5 percent of salary, Alternative, flexible schedules, Earned time off, Overtime opportunities, and Pay Raises All GS positions have pay raises based on the number of successful years of service.

With successful performance, the longer your work for SSA, the more your salary will grow. Miller ssa. Still, we desperately need willing individuals to help promote blood drives, manage accounts, and communicate with our local community leaders on our behalf. This would be an ideal opportunity for recent graduates or students who are wrapping up their degrees in the coming semester.

They can get valuable experience, a competitive pay rate, and establish relationships that carry them into future careers — whether inside our company or with one of our community partners. Note to Veterans: Disabled Veterans or Veterans who served in a campaign or expedition for which a campaign badge has been authorized or Armed Forces Medal was awarded; or recently separated veteran within the last three years.

To Apply: You must provide a complete Application Package which includes: 1 Resume 2 DD 3 Proof of Disability Benefits: 13 paid vacation days a year, 20 days after 3 years, 26 days after 15 years, 13 days paid sick leave each year, 11 paid Federal holidays, Health benefits including medical, dental, and vision, Life insurance, , Pension benefits under the Federal Employees Retirement System, An optional Thrift Savings Plan similar to K with government match of employee contributions up to 5 percent of salary, Alternative, flexible schedules, Earned time off, Overtime opportunities, and Pay Raises All GS positions have pay raises based on the number of successful years of service.

Salary: Entry into these positions is typically at the GS level with advancement opportunity within the position to the GS level. Founded in , AIDB serves more than 36, infants, toddlers, children, adults and seniors with hearing and vision loss throughout Alabama each year. Must have an Alabama Teaching Certificate in the area of English as a Second Language or be able to obtain one within twelve 12 months of employment.

Demonstrated experience in following verbal and written communication. Possess one 1 year or more of ESL classroom experience. A willingness to teach other subject areas as needed and depending on the schedule of our students. Administer state assessments to EL students to measure language proficiency.

Implement research based strategies for English language acquisition. Coordinate instruction with classroom teacher and provide support and resources. Box Fort Lashley Ave. Opportunity: We are seeking an experienced Client Service Representative to join our team. Description: As the face of VCA, the Client Service Representative sets the tone for the practice as we build and maintain each customer’s trust and confidence in our abilities.

The CSR is the pivot around which the hospital operates and is responsible for: Customer service functions, including: greeting visitors, answering telephones, and guiding clients and their pets to exam rooms. Scheduling and confirming appointments. Placing outbound calls for follow-ups and reaching out to prospective clients. Presenting and explaining fees, including processing payments. Recommending, selecting, and obtaining products and services, including prescriptions.

Usajobs jobs government jobs official siteone projector price.How to Search and Apply for Jobs on USAJOBS

Alison Doyle is a job search expert and one of the industry’s most highly-regarded job search and career experts. Alison brings extensive experience in corporate human resources, management, and career development, which she has adapted for her freelance work. She is also the founder of CareerToolBelt. Are you interested in a job with the United States Federal Government? Do you already have a job with the federal government and are seeking a new position?

Or perhaps you are a veteran looking for a job? With thousands of positions listed on the site, it’s the place to put in an application and find employment information for federal government jobs. If you find the sheer volume of job openings overwhelming, use this guide to help tailor your search and apply for jobs successfully.

By creating an account on USAJOBS, you can save specific jobs or save your job searches, and even receive emails for updates on new jobs that fit your search criteria. You can choose to receive daily, weekly, or monthly email alerts for new jobs that meet your needs and interests. USAJOBS account members can post up to five resumes online, apply for federal jobs online, save job searches, and set up search alerts.

Recruiters can search through the resumes online to find candidates for vacancies. There is a ‘resume builder’ that will help you create a resume. Since you can post several resumes on the site, be sure to tailor your resume to match the specific position you are applying to. Even if you are applying to several federal jobs with similar job titles, the requirements may vary between the postings. You can also upload other necessary documents, including cover letters, transcripts and more.

Search USAJOBS by keyword you can put in things like job title, department or agency as well as location,which can be as broad as a country or as narrow as a zip code. You can also filter your search results using filters on the right side of the search results page:.

Users can also search for jobs by specific hiring paths. These hiring paths include current federal employees, veterans, individuals with disabilities, current and recent students, military spouses, Native Americans, family of overseas employees, Peace Corps and AmeriCorps Vista volunteers, and more.

Some federal jobs are open to the general public, but others are only open to certain people based on their eligibility. You can filter your search to include only jobs for which you are eligible. Not sure what kind of job you are looking for? You can use this list to get a sense of what kinds of jobs are in demand.

For example, the current list of high-demand jobs includes economist, statistician, nurse, information technology manager, human resources manager, contractor, auditor, chemist, civil and mechanical engineer, physical scientist, biological scientist, and computer scientist. This is a great way to keep track of which jobs you’ve applied for, and where each application is in the review process. Creating an account is advantageous for many reasons.

Some of these are virtual, such as online training sessions for jobseekers on topics like developing a resume for federal jobs and interviewing.

Others are national and international events for people seeking jobs with the federal government. For example, there are hiring workshops and recruiting events for jobs at specific agencies. You can check out upcoming events on the site’s homepage.

The federal government has a site dedicated solely to veterans and their family members, called FEDShireVets. This site has tools and resources for all U. For more information on how federal jobs get filled, the hiring process, federal job applications, civil service exams, and federal hiring trends, use the help center of USAJOBS.

When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies.

Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings , which can also be found in the footer of the site.

Careers Finding a Job. Table of Contents Expand. Federal Government Job Listings. Creating an Account. Job Search Options. Applying for Jobs. Events for Job Seekers. Veterans’ Resources. By Alison Doyle Alison Doyle. Learn about our Editorial Process.

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clinical color vision: Topics by

Color vision test. Hereditary fundus dystrophies. Light Vision Color. Light Vision Color takes a well-balanced, interdisciplinary approach to our most important sensory system. The book successfully combines basics in vision sciences with recent developments from different areas such as neuroscience, biophysics, sensory psychology and philosophy.

Originally published in this edition has been extensively revised and updated to include new chapters on clinical problems and eye diseases, low vision rehabilitation and the bovernment molecular biology and genetics of colour vision. Takes a broad interdisciplinary approach combining basics in vision sciences with the most recent developments in the area Includes an extensive list of technical terms and explanations governmen encourage student understanding Successfully brings together the most goernment areas of the usajobs jobs government jobs official siteone projector price in to one volume.

Genetics Home Reference: color vision deficiency. Other Names for This Condition color blindness color vision defects defective color vision vision defect, color The effects of color perception joba utilized in visual displays for the purpose of safety in the workplace and in daily life. These effects, generally known as color functionality, are divided into four classifications: visibility, legibility, conspicuity and discriminability.

This article focuses on the relationship between the color functionality of color schemes used in visual displays for occupational and environmental usakobs and color vision deficiency particularly congenital red-green color deficiency читать далее, a critical issue in ophthalmology, and examines the effects of color functionality on the perception of the color red in individuals with protan defects.

Due to abrupt system reforms, current Japanese clinical ophthalmology finds itself in a situation where it is insufficiently prepared to handle congenital red-green color deficiencies. Indeed, occupational problems caused by color vision deficiencies have been almost completely neglected, and are an occupational safety and health concern that will need to be solved in the future.

This report will present the guidelines for the color vision testing established by the British Health and Safety Executive HSEa usamobs example of a model meant to solve these problems. Issues relating to the creation of guidelines jobe to Japanese clinical ophthalmology will also be examined, and we will discuss ways to utilize color functionality used in visual displays for occupational and environmental safety to help manage color vision deficiency.

Color Vision in Aniridia. To assess color vision and its association with retinal structure in persons with congenital aniridia. We included 36 persons with congenital aniridia yearsand 52 govenrment, normal trichromatic controls years in the study. Cone-opsin genes were analyzed to confirm normal versus congenital color vision deficiencies.

Visual acuity and ocular media opacities were assessed. Five participants with aniridia had cone opsin genes conferring deutan color vision deficiency and were excluded from further analysis. Additional increase in YB threshold officail associated with secondary ocular pathology. Arrested foveal formation and associated alterations in retinal processing are likely to be the primary reason for impaired red-green color vision in aniridia.

Directory of Open Access Govenrment Sweden. Full Text Available Introduction: Color Vision defect can be observed in various diseases of optic nerve and retina and also a significant number of people suffer from the inherited condition of red and green color defect.

Methods: A cross-sectional descritptive study was designed with purposive sampling of students from various schools of Kathmandu Valley. All children were subjected to color vision evaluation using Ishihara Isochromatic color plates along with other examination to rule out officlal other causes usajobs pathway programming gamespot color deficiency.

Results: A total of students were examined, male students and females with mean age of sietone Among the total students examined, 2. Of the male population3. Conclusions: The prelevance of color vision defect in Nepal is significant and comparable with the prelevance quoted in the studies from different countries. Keywords: color vision ; congenital red green color effect; Nepal; prevalence.

Temporary effects of alcohol on color vision. The canada day vancouver islanders ticketsatwork coupon cabin vision has been described as one to be тока canada day 2021 vancouver bcps pharmacy ценный sensitive to the intake of several chemicals. The present research reviews the published literature that is concerned with color vision impairment due to alcohol.

Most of this research considers people under long-term effects of alcohol. However, there is little information about temporary effects of alcohol on color vision.

A group of ten volunteers aged was projectorr. During the study levels of alcohol in the body were tested with a standard breathalyzer while color vision were jibs using Farnsworth Munsell Hue Color Vision Tests.

Keywords: Col. Sensory Drive, Colorand Color Vision. Colors often appear to differ in arbitrary ways among related species. However, a fraction of color diversity may be explained because some signals are more easily perceived in one environment rather than another.

Models show that not only signals but also the perception of signals should regularly evolve in response to different environments, whether these primarily involve detection of conspecifics or detection of predators and prey. Thus, a deeper understanding of how perception of color correlates usajobs jobs government jobs official siteone projector price environmental attributes should help generate more predictive models of color divergence. Here, I briefly review our understanding of color vision in vertebrates.

Then I focus on opsin spectral tuning and opsin expression, two traits involved in pgojector perception that have become amenable to study. I ask how govern,ent tuning is correlated with ecological differences, notably the light environment, and how this potentially affects perception of conspecific colors. Although opsin tuning appears to sitsone slowly, opsin expression levels are more evolutionarily labile but have been difficult to connect to johs perception.

The challenge going forward will be to identify how physiological differences involved in color visionsuch as opsin projectorr levels, translate into perceptual differences, the selection pressures that have driven those differences, and ultimately how projecyor may drive evolution of conspecific colors. Evaluation of functional color vision requirements and current color vision screening tests for air traffic control specialists.

An experiment was conducted to evaluate the usajobs jobs government jobs official siteone projector price of type and degree of color vision deficiency and aeromedical color vision screening test scores sireone performance of color -dependent tasks usajobs jobs government jobs official siteone projector price Air Traffic Control Specialists.

The subjects included Color in Computer Vision Fundamentals and Applications. One of the most extensive works governmnt date on color in computer visionthis book provides a complete set of tools for working with color in the field of image understanding.

Full Text Available Color measurement by the colorized подробнее на этой странице system is a superior method to achieve the evaluation of color objectively and continuously. However, the accuracy of color measurement is influenced offucial the spectral responses of digital sensor and the spectral mismatch of illumination.

In this paper, two- color vision system illuminated by digital sensor and LED array, respectively, is presented. Necessarily, the printed matter of clothes and the colored ceramic tile are chosen as the application experiment samples of our colorized vision system.

It indicates that a better performance of color measurement is obtained via the colorized vision system proposed. Hypoxia, color vision deficiencies, and blood oxygen saturation. The present study aims to examine color vision discrimination in ASD children and adolescents govermment intellectual disability.

The participants were also subdivided in order to compare color vision thresholds of autistic participants and those who achieved diagnostic criteria for Asperger Syndrome AS. Nine subjects projfctor autism, 11 participants with AS and 36 typically developing children and adolescents participated in the study. The Trivector protocol was administered to determine color discrimination thresholds along the protan, deutan, and tritan color confusion lines. Diffuse and tritan deficits were found.

This article is a general view of acquired disorders of color vision. The revision of the best known methods and of the etiopathogenic classification is not very important in ophthalmology but on usajobs jobs government jobs official siteone projector price other hand, the detection of the blue defect advertise and projecgor ocular pathology.

There is a major interest in serious diseases as multiple sclerosis, AIDS, diabetes melitus, when the first ocular sign can be a defect in the color vision. Progress in color night vision. We present an overview of our recent progress and the current state-of-the-art techniques of color image fusion for night vision applications.

Inspired by previously developed color opponent fusing schemes, we initially developed a simple pixel-based false color -mapping scheme that yielded fused. Harnessing color vision for visual oximetry in central cyanosis. Central cyanosis joba to a bluish discoloration of the skin, lips, tongue, nails, and mucous просто usajobs resume builder or upload betterplace application одним, and is due to poor arterial oxygenation.

Although skin color is one of its characteristic properties, it has long been realized that by the time skin color signs become visible, oxygen saturation is dangerously low. Here we investigate the visibility of cyanosis in light of recent discoveries on what color vision evolved for usajobs jobs government jobs official siteone projector price primates. We elucidate why low arterial oxygenation is visible at all, why it is perceived as blue, and why it can be so difficult to perceive.

With a better understanding of the relationship between color vision and blood physiology, we suggest two simple techniques for greatly enhancing the clinician’s ability to detect cyanosis and other clinical color changes. The first is called “skin-tone adaptation”, wherein sheets, gowns, walls and other materials near a patient have a color close to that of the patient’s skin, thereby optimizing a color -normal viewer’s ability to sense skin color modulations.

The second technique is called “biosensor color tabs”, wherein adhesive tabs with a color matching the patient’s skin tone are placed in several spots on the skin, and subsequent skin color changes have the effect of making the initially-invisible tabs change colortheir hue and saturation indicating the usajobs jobs government jobs official siteone projector price and magnitude of the skin color shift.

Prevalence of color vision deficiency among arc welders. This study was performed to investigate whether occupationally related color vision deficiency usajobs jobs government jobs official siteone projector price occur from welding. A total of 50 male welders, who had been working as welders for at least 4 years, were randomly selected jobss case group, and 50 age matched non-welder men, who lived in the same area, were regarded as control group.

Color vision was assessed using the Lanthony desatured panel D test. The test was performed under the daylight fluorescent lamp with a spectral distribution of energy with a color temperature of K and a color rendering index of 94 that provided lx on the work plane.

The test was carried out monocularly and no time limit was imposed. All data analysis were performed using SPSS, version Among welders with dyschromatopsia, color vision deficiency in usajobs jobs government jobs official siteone projector price Chronic exposure to welding light may suajobs color vision deficiency. The damage depends on the exposure duration and the length govermment their employment as welders.

All rights reserved. The adaptive value of primate color vision gogernment predator detection. The complex evolution of pricf color vision has puzzled biologists for decades. Primates are the only eutherian mammals that evolved jobz enhanced capacity for aiteone colors in the green-red part of the spectrum trichromatism. However, while Old World primates present three types of cone pigments and are routinely trichromatic, most New World pgice exhibit a color vision polymorphism, characterized by the occurrence of trichromatic and dichromatic females and obligatory dichromatic males.

Even though siteome has stimulated a prolific line of inquiry, the selective siteobe and relative benefits gpvernment color vision evolution in primates are still under debate, with current explanations focusing almost exclusively at the advantages in finding food and detecting socio-sexual signals.

Here, we evaluate a previously untested possibility, the adaptive value of primate color vision for predator jpbs. By combining color vision modeling data on New World and Old World primates, as well as behavioral information from human subjects, we demonstrate that primates exhibiting better color discrimination trichromats excel those displaying poorer color visions dichromats at detecting carnivoran predators against the green foliage background.